# Changelog
## 0.5.0
- Change: Added TLS and BasicAuthentication support to `push` client.
## 0.4.2
- Change: Update to use protobuf 2.0.
## 0.4.1
- Change: `(Local)(Int)Counter.inc_by` only panics in debug build if the given value is < 0 (#168).
## 0.4.0
- Add: Provides `IntCounter`, `IntCounterVec`, `IntGauge`, `IntGaugeVec`, `LocalIntCounter`, `LocalIntCounterVec` for better performance when metric values are all integers (#158).
- Change: When the given value is < 0, `(Local)Counter.inc_by` no longer return errors, instead it will panic (#156).
- Improve performance (#161).